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fnos-dev-api

fnos-dev-api is a skill for Claude Code, Codex from iranee/fnos-hermes-agent. It costs 28 tokens per session (9,241 once invoked), scanned B, original, GPL-3.0.

A skill for building .fpk packages, which are private fnOS application packages stored as compressed tar archives with a required folder structure.

In plain words
What is it for?
It helps package and publish fnOS private applications with the fnpack tool.
Why use it?
It explains the package format and the tool used to assemble and publish it, reducing guesswork when preparing fnOS apps.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 113repo +1 2mo ago B scan 28 tokens GPL-3.0

Good fit It helps package and publish fnOS private applications with the fnpack tool.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/iranee/fnos-hermes-agent/fnos-dev-api
View source ↗ iranee/fnos-hermes-agent
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add iranee/fnos-hermes-agent --skill fnos-dev-api
Clone the repo
git clone --depth 1 https://github.com/iranee/fnos-hermes-agent

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fnos-dev-api

README.md
[![agentmods](https://agentmods.dev/badge/skills/iranee/fnos-hermes-agent/fnos-dev-api/github.svg)](https://agentmods.dev/skills/iranee/fnos-hermes-agent/fnos-dev-api)
Your own site
<a href="https://agentmods.dev/skills/iranee/fnos-hermes-agent/fnos-dev-api"><img src="https://agentmods.dev/badge/skills/iranee/fnos-hermes-agent/fnos-dev-api/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fnos-dev-api

Your own site · 80×15
<a href="https://agentmods.dev/skills/iranee/fnos-hermes-agent/fnos-dev-api"><img src="https://agentmods.dev/badge/skills/iranee/fnos-hermes-agent/fnos-dev-api.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,241 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00028 $0.09241
Opus 5.5 $0.00011 $0.03696
Sonnet 5.5 $0.00006 $0.01848
Haiku 4.5 $0.00003 $0.00924

Measured 2mo ago against content hash 7abc7e79916b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

fnos-dev-api scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootmediumPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

chmod +x fnpack && sudo mv fnpack /usr/local/bin/

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -L https://developer.fnnas.com/downloads/fnpack-1.2.3-linux-amd64 -o fnpack
config/prompts/skills/fnos-knowledge/fnos-dev-api/SKILL.md · 901 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 901 lines · 28 tokens per session scan B 7abc7e79916b

Subscribe to this mod's changes

fnos-dev-api is a skill published in the GitHub repository iranee/fnos-hermes-agent (113 stars, last pushed 2mo ago), licensed GPL-3.0. It adds 28 tokens to every session and 9,241 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it B with 2 findings (asks for root, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

DevOps and cloud
Related

fnos-dev-api compared with skills from other repositories

fnos-dev-api next to 6 skills from other repositories
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